Apparatus for attaching reinforcements to nets



APPARATUS FOR ATTACHING REINFORCEMENTS TO NETS Filed June 13, 1960 Oct. 31, 1961 L. L. LINDHOLM 2 Sheets-Sheet 1 FIG.I.

INVENTOR Lennorr Ludvig Lindholm Oct. 31, 1961 1.. 1.. LINDHOLM 3,006,232

- APPARATUS FOR ATTACHING REINFORCEMENTS TO NETS 2 Sheets-Sheet 2 Filed June 13, 1960 FIG.2.

INVENTOR Lennon Ludv ig Lindholm United States aren't 3,006,232 APPARATUS FOR ATTACHING REINFORCE- MENTS TO NETS Lennart Lndvig Lindholrn, Teg, Umea, Sweden, assignor to Bertil Waldemar Bourwall, Umea, Sweden Filed June 13, 1969, Ser. No. 35,82 Claims priority, application Finland June 19, 1959 1 Claim. (Cl. 87-62) After a net, e.g. a fishing-net, has been completed a reinforcement in the form of a cord is fastened to the long sides of the net. This work is performed manually, even in net factories, with the aid of a netting pin which is passed round the reinforcements.

The object of the present invention is to provide an apparatus for fastening the reinforcement to the net and to perform this work in an effective manner.

The apparatus consists essentially of a frame with a mechanism built into it, an open ring needle provided with a yarn spool, and a tying claw upon which the needle winds the yarn and upon which the knot is formed. The needle is bent to form a ring, but is not closed and the ends are free so as to form a gap therebetween. It is ringshaped to permit its being moved round in a circular path and wind the yarn on the tying claw, and is open to permit a reinforcement to be introduced inside the circular path and to permit the yarn to be passed through the meshes as well.

The drawings show an embodiment of the invention. FIG. 1 is an elevation, partly in section, of the apparatus; FIG. 2 is a front view of the apparatus in a side projection and in section along the line 22 in FIG. 1, and FIGS. 3-5 illustrate the tying operation. The drive mechanism of the apparatus is not shown in the drawings as this can be modified in many ways. Only the power transmitting elements and the elements which are immediately connected to the needle and the tying claw are shown and described.

In the drawings reference numeral 1 denotes the frame and 2 the needle. The needle is tubular and open and is vertically disposed and is fitted in the frame and held in place by an arm 3 which constitutes part of the frame. The center line is denoted by Y-Y, the needle moving in a groove 5 in the frame and the arm being moved around in the direction of the arrow 6 by a driving wheel 7. A yarn spool 8 is inserted in the ring needle and the yarn 9 is passed from the spool and out through an aperture 10 in the end portion 11 of the ring needle. The tying claw is positioned inside the circular path of the needle. It is vertically disposed in parallel relation with the circular path of the needle. The tying claw is shiftable at right angles outwardly from the center of rotation of the needle and may be pivoted on a guide 13. It is moved by a rod 14 driven by the drive and is pivoted through an axle driven by the apparatus. The claw 12 and the guide 13, the rod 14 and the axle 15 are also movable at right angles outwardly from the circular path of the needle. A pinion is provided between the axles 13 and 15. A knot is tied in the manner described below, and the method is illustrated in FIGS. 3, 4 and 5.

During tying the reinforcement 16 is so placed on the table 17 of the apparatus that it is encircled by the needle when it runs around in its path. The reinforcement 16 and the outermost row 16b of meshes of the net 16a are parallel or approximately parallel with the center of ro- "ice tation of the ring needle. The table is at right angles to the ring needle as is shown in FIG. 2, and the tying claw is positioned below the plane of the table. The yarn 9 is shown tied to the reinforcement at 18, see FIG. 3. Two meshes are laid upon one another and are manually brought in under the point 1 9 of the needle as is shown in FIG. 3 where the ring needle is indicated by the dotted circle 20. The ring needle is driven around through one revolution whereby the yarn is passed through the two meshes. The ring needle is driven through another revolution whereby the yarn is wound two turns around the claw pin 21 and the reinforcement 16. The claw is then moved in the direction of the arrow 22 (FIG. 1) and is pivoted in the direction of the arrow 23 to an angled position relative to the circular path of the needle (FIG. 2), such position being shown in dot-dash lines in FIGS. 1, 2 and 4. The ring needle is revolved once more and passes through the double coil 25 wound on the claw, which can be done since the claw has a notch 12a. The yarn is thereby drawn through the double coil. The claw is swung back and is moved to its initial position. The claw is thereby moved to the left in the direction of the arrow 26' whereby the coil is slid off the pins of the claw by means of a doctor 27, FIG. 5. The doctor is fastened to the frame or the table and is thus fixed and is disposed between the claw 12 and the center line of the ring needle which is at right angles to the center of rotation of the ring needle. The knot is then immediately tightened through spring means in the ring needle. This comprises a spiral spring 26 one end of which is attached to the end portion 11 of the ring needle and extends to a suitable portion of the ringe needle. It terminates with an end piece 28 having a resilient gripper claw 29 which grips the yarn. During winding the spring is compressed in the direction of the arrow 30 to a suitable extent determined by the spring force of the gripper claw. The yarn then slides through the claw and when the double coil has been lifted by the tying claw 12 the yarn is slack and the double coil is tightened to a suitable extent around the reinforcement by the spring 26 tending to return to its initial position. Thus, knot upon knot is tied with two meshes hanging from the yarn between each knot. Similarly, one, or more than two, meshes may be hung between two knots.

The foregoing description is for purposes of illustration and not of limitation and the embodiment shown is capable of modifications without departing from the scope of the invention as set forth in the appended claim.

I claim:

Apparatus for attaching reinforcements to nets, comprising, in combination: a frame; a reinforcement for accommodating the edge meshes of a net; a vertically disposed tubular open ring needle guided in said frame and having a yarn spool, said ring needle being revolvable in a circular path for winding and delivering the yarn and being open to provide a gap between its ends to permit said reinforcement and net meshes to be disposed within the circular path; a table having a plane disposed approximately in the center of rotation of said ring needle for carrying a net and the reinforcement; a tying claw below said plane of said table and within the circular path of the needle for receiving yarn from the yarn spool and forming knots, said tying claw having at least three spaced horizontal claw pins and being movable outwardly with respect to said circular path; means mounting said tying claw for pivotal movement to an angled position relative to the circular path; means guiding said ring needle and said tying claw for movement to cooperate in a predetermined series of motions for tying a knot in such a manner that said ring needle passes yarn during an initial revolution from said ring needle through at least one edge mesh of a net and in a coil over said reinforcement and inside said circular path over said claw pins, then passes another coil of yarn around said reinforcement and claw pins, and after said tying claw is moved to said circular path passes another turn of the yarn through the double coil about said claw pins for forming a knot around said reinforcement which takes place after the coil has been carried away and tightened.

References Cited in the file of this patent UNITED STATES PATENTS 597,909 Karlander Jan. 25, 1898 FOREIGN PATENTS 326,928 Switzerland Feb. 28, 1958 

